RAIDWatch User's Manual
RAIDWatch User's Manual
RAIDWatch User's Manual
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<strong>RAIDWatch</strong> User’s <strong>Manual</strong><br />
1.2.4.2 Mode Two: Stand-alone (on Host)<br />
For configurations depending on the existing SCSI, iSCSI, or Fibre host<br />
connection for <strong>RAIDWatch</strong>-to-RAID communications. Servers in DAS<br />
(Direct Attached Storage) environments, SCSI host models for example,<br />
require RAID agents for <strong>RAIDWatch</strong> commands to pass through and<br />
communicate with RAID arrays. RAID agents are installed onto the servers<br />
that are directly attached with a RAID subsystem.<br />
1.2.4.3 Mode Three: Stand-alone (on Subsystems)<br />
For remote and server-transparent management using an Ethernet<br />
connection to EonStor subsystems or EonRAID controllers. The manager<br />
program is installed on the RAID subsystem itself. The RAID subsystem<br />
then uses a segregated disk space, called the “reserved space,” to store the<br />
program files. The array is accessed by invoking a Java Applet on a web<br />
browser that runs anywhere in the network.<br />
NOTE:<br />
RAID agents are embedded in the RAID subsystem firmware. When<br />
subsystems are installed in Mode 2 or Mode 3, the management station<br />
running in Mode 1 can manage the <strong>RAIDWatch</strong> components. This way,<br />
multiple and/or distant arrays can be managed by a single management<br />
station.<br />
1.2.4.4 Access Requirements<br />
Three (3) installation schemes for different access requirements are<br />
discussed below.<br />
NOTE:<br />
The discussions below do not include all possibilities. <strong>RAIDWatch</strong><br />
supports various configurations and the combinations of machines<br />
running components installed in any of the three different modes.<br />
1. A RAID Server Chosen as the Centralized Management Station:<br />
Applied in heterogeneous environments where multiple arrays are<br />
serving different hosts/applications and scattered in distant locations.<br />
Access management over the network is achieved through data<br />
exchanges between a local or remote <strong>RAIDWatch</strong> Manager station<br />
(can be a RAID server or not) and RAID agents that are installed on<br />
the RAID servers or RAID subsystems themselves. The management<br />
center and the <strong>RAIDWatch</strong> station can be two different machines.<br />
A Root agent is installed on a computer chosen to be the<br />
management center. Figure 1-4 shows a typical connection and<br />
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